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Last Build Date: Wed, 13 Dec 2017 05:00:00 GMT

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Taphephobia

Wed, 13 Dec 2017 05:00:00 GMT

(image) Taphephobia is the psychopathological fear of being buried alive. Before the advent of modern medicine, this fear was not entirely irrational. Throughout history, there have been many cases of people being accidentally buried alive, and the horrific prospect has been a favorite subject of urban legends and literature, including several stories by Edgar Allan Poe. During the 18th and 19th centuries, such fears led to a large number of designs for "safety coffins," which employed what safeguards? Discuss



Hydras

Tue, 12 Dec 2017 05:00:00 GMT

(image) Hydras are simple freshwater organisms found in temperate and tropical regions. They are especially interesting to biologists because they undergo morphallaxis when injured, regenerating new body parts to replace dead or damaged tissue. When a hydra is severed in two, for example, its segments reorganize to form two fully functional, independent hydras. Some evidence suggests that hydras are unique among animals in that they do not experience senescence, meaning they do not undergo what process?



Angel Falls

Mon, 11 Dec 2017 05:00:00 GMT

(image) The world's highest uninterrupted waterfall, Venezuela's Angel Falls drops 3,212 ft (979 m) and is 500 ft (150 m) wide at its base, where it feeds into the Churun River. It is named for American aviator James Angel, who in 1937 crash-landed his plane near the top of the falls and was forced—with his companions—to descend on foot. Their trek took 11 days. How long did the plane remain atop the mountain?